@dolomite-exchange/dolomite-margin

{ "contractName": "Exchange", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.5.16+commit.9c3226ce\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"author\":\"dYdX * Library for transferring tokens and interacting with ExchangeWrappers by using the Wei struct\",\"methods\":{},\"title\":\"Exchange\"},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Exchange.sol\":\"Exchange\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":10000},\"remappings\":[]},\"sources\":{\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/interfaces/IERC20Detailed.sol\":{\"keccak256\":\"0x22a62e2a8155e70300773721902f4b9118e17aa0bb5d9d1b046050a014cfb223\",\"urls\":[\"bzz-raw://03af737a33c552fbe58f6f1fbd5496854fdc28dd57be4365d56663725c083a18\",\"dweb:/ipfs/QmbgLqGAQEd6tXsZB8QaPNCAMiU6nNzP75wNbKdS65BuUF\"]},\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/interfaces/IExchangeWrapper.sol\":{\"keccak256\":\"0x74799c3fac16738be41e270a70d3f7ad4f75d1dc7e5d8c58f0fe4c6128345112\",\"urls\":[\"bzz-raw://d9602af1001189d199736d17266d5fb34a32f71cd05fbcf4c0f97c0b3a642eee\",\"dweb:/ipfs/QmPto2DkZ1nKqicBMdMkaek7kGSSXqSKnf697h5zuthvsy\"]},\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/DolomiteMarginMath.sol\":{\"keccak256\":\"0x53f205f6a779d579be29faa9412c806a892b3e605fff092dfd9d14d936fa019f\",\"urls\":[\"bzz-raw://0ff936f89602a63b8e6a4eb4ce8f87673c0f45b7ce29694920905a3f0b5a6a69\",\"dweb:/ipfs/QmbYME9BeEvPC1ndV8EaUDX5fDMghLc3rocNUxFtgHmg8m\"]},\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Exchange.sol\":{\"keccak256\":\"0x5952f2f78aa0adb88980d9eeec5626fecbec79103038841c3ad9e4f2c4ac556b\",\"urls\":[\"bzz-raw://2a358a8370fa8abba24db2a3337f5b397e51a686d84facaf70ced9cc32d65235\",\"dweb:/ipfs/QmY4vPNq3SMu176LL4XRxFPtDQf8QEztQNxerWvmoEALsR\"]},\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Require.sol\":{\"keccak256\":\"0x05a2a90b41b6a5f42f0a72da63d015fb0b406a9ba2172823352e522e8bf3a606\",\"urls\":[\"bzz-raw://19883f0c6d33266f756ec5c3d17539524aa24b993c46c33f8400801d09373a6c\",\"dweb:/ipfs/QmYX2fwK3vQQDSZLMrc5wMfeb8RWrcC9CGX8XECLty8QDk\"]},\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Token.sol\":{\"keccak256\":\"0x095b5f8eb3665f6e246200311efc8a654fa3e90f9a1a522e27a4d089e8ab3917\",\"urls\":[\"bzz-raw://5db812b752a03d601d424e6e21be38153477082af0acf51b5c98eefa5553ed18\",\"dweb:/ipfs/QmbE549QUXYTurpx8hSMLBJvuBpfYqyNE6FBCgHJDY8PLf\"]},\"/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Types.sol\":{\"keccak256\":\"0xe1bab8c8799d83e86c7a49aaf815d8e3bc8d09562d46d44d921500db5e98de0e\",\"urls\":[\"bzz-raw://8ea3d0cc4fdab6dd9bba545a792170f939b342d8d1a7051c1c6365009af72658\",\"dweb:/ipfs/QmaLJgbavu88eEit6JPqfWnw6NmGBDZfveMXxumgWywBFG\"]},\"@openzeppelin/contracts/math/SafeMath.sol\":{\"keccak256\":\"0x640b6dee7a4b830bdfd52b5031a07fc2b12209f5b2e29e5d364a7d37f69d8076\",\"urls\":[\"bzz-raw://31113152e1ddb78fe7a4197f247591ca894e93f916867beb708d8e747b6cc74f\",\"dweb:/ipfs/QmbZaJyXdpsYGykVhHH9qpVGQg9DGCxE2QufbCUy3daTgq\"]},\"@openzeppelin/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0xe5bb0f57cff3e299f360052ba50f1ea0fff046df2be070b6943e0e3c3fdad8a9\",\"urls\":[\"bzz-raw://59fd025151435da35faa8093a5c7a17de02de9d08ad27275c5cdf05050820d91\",\"dweb:/ipfs/QmQMvwEcPhoRXzbXyrdoeRtvLoifUW9Qh7Luho7bmUPRkc\"]}},\"version\":1}", "bytecode": "0x60636023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea365627a7a723158202eee24c768ba1b25473f3d67193202a25b27c6b455929ba9f5fea2f28896f6606c6578706572696d656e74616cf564736f6c63430005100040", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea365627a7a723158202eee24c768ba1b25473f3d67193202a25b27c6b455929ba9f5fea2f28896f6606c6578706572696d656e74616cf564736f6c63430005100040", "sourceMap": "993:2653:96:-;;132:2:-1;166:7;155:9;146:7;137:37;255:7;249:14;246:1;241:23;235:4;232:33;222:2;;269:9;222:2;293:9;290:1;283:20;323:4;314:7;306:22;347:7;338;331:24", "deployedSourceMap": "993:2653:96:-;;;;;;;;", "source": "/*\n\n Copyright 2019 dYdX Trading Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n\n*/\n\npragma solidity ^0.5.7;\npragma experimental ABIEncoderV2;\n\nimport { Require } from \"./Require.sol\";\nimport { Token } from \"./Token.sol\";\nimport { Types } from \"./Types.sol\";\nimport { IExchangeWrapper } from \"../interfaces/IExchangeWrapper.sol\";\n\n\n/**\n * @title Exchange\n * @author dYdX\n *\n * Library for transferring tokens and interacting with ExchangeWrappers by using the Wei struct\n */\nlibrary Exchange {\n using Types for Types.Wei;\n\n // ============ Constants ============\n\n bytes32 private constant FILE = \"Exchange\";\n\n // ============ Library Functions ============\n\n function transferOut(\n address token,\n address to,\n Types.Wei memory deltaWei\n )\n internal\n {\n Require.that(\n !deltaWei.isPositive(),\n FILE,\n \"Cannot transferOut positive\",\n deltaWei.value\n );\n\n Token.transfer(\n token,\n to,\n deltaWei.value\n );\n }\n\n function transferIn(\n address token,\n address from,\n Types.Wei memory deltaWei\n )\n internal\n {\n Require.that(\n !deltaWei.isNegative(),\n FILE,\n \"Cannot transferIn negative\",\n deltaWei.value\n );\n\n Token.transferFrom(\n token,\n from,\n address(this),\n deltaWei.value\n );\n }\n\n function getCost(\n address exchangeWrapper,\n address supplyToken,\n address borrowToken,\n Types.Wei memory desiredAmount,\n bytes memory orderData\n )\n internal\n view\n returns (Types.Wei memory)\n {\n Require.that(\n !desiredAmount.isNegative(),\n FILE,\n \"Cannot getCost negative\",\n desiredAmount.value\n );\n\n Types.Wei memory result;\n result.sign = false;\n result.value = IExchangeWrapper(exchangeWrapper).getExchangeCost(\n supplyToken,\n borrowToken,\n desiredAmount.value,\n orderData\n );\n\n return result;\n }\n\n function exchange(\n address exchangeWrapper,\n address accountOwner,\n address supplyToken,\n address borrowToken,\n Types.Wei memory requestedFillAmount,\n bytes memory orderData\n )\n internal\n returns (Types.Wei memory)\n {\n Require.that(\n !requestedFillAmount.isPositive(),\n FILE,\n \"Cannot exchange positive\",\n requestedFillAmount.value\n );\n\n transferOut(borrowToken, exchangeWrapper, requestedFillAmount);\n\n Types.Wei memory result;\n result.sign = true;\n result.value = IExchangeWrapper(exchangeWrapper).exchange(\n accountOwner,\n address(this),\n supplyToken,\n borrowToken,\n requestedFillAmount.value,\n orderData\n );\n\n transferIn(supplyToken, exchangeWrapper, result);\n\n return result;\n }\n}\n", "sourcePath": "/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Exchange.sol", "ast": { "absolutePath": "/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Exchange.sol", "exportedSymbols": { "Exchange": [ 27434 ] }, "id": 27435, "nodeType": "SourceUnit", "nodes": [ { "id": 27219, "literals": [ "solidity", "^", "0.5", ".7" ], "nodeType": "PragmaDirective", "src": "603:23:96" }, { "id": 27220, "literals": [ "experimental", "ABIEncoderV2" ], "nodeType": "PragmaDirective", "src": "627:33:96" }, { "absolutePath": "/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Require.sol", "file": "./Require.sol", "id": 27222, "nodeType": "ImportDirective", "scope": 27435, "sourceUnit": 28453, "src": "662:40:96", "symbolAliases": [ { "foreign": 27221, "local": null } ], "unitAlias": "" }, { "absolutePath": "/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Token.sol", "file": "./Token.sol", "id": 27224, "nodeType": "ImportDirective", "scope": 27435, "sourceUnit": 30851, "src": "703:36:96", "symbolAliases": [ { "foreign": 27223, "local": null } ], "unitAlias": "" }, { "absolutePath": "/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/lib/Types.sol", "file": "./Types.sol", "id": 27226, "nodeType": "ImportDirective", "scope": 27435, "sourceUnit": 31362, "src": "740:36:96", "symbolAliases": [ { "foreign": 27225, "local": null } ], "unitAlias": "" }, { "absolutePath": "/home/cdc218/projects/dolomite-protocol-v2/contracts/protocol/interfaces/IExchangeWrapper.sol", "file": "../interfaces/IExchangeWrapper.sol", "id": 27228, "nodeType": "ImportDirective", "scope": 27435, "sourceUnit": 24750, "src": "777:70:96", "symbolAliases": [ { "foreign": 27227, "local": null } ], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": "@title Exchange\n@author dYdX\n * Library for transferring tokens and interacting with ExchangeWrappers by using the Wei struct", "fullyImplemented": true, "id": 27434, "linearizedBaseContracts": [ 27434 ], "name": "Exchange", "nodeType": "ContractDefinition", "nodes": [ { "id": 27231, "libraryName": { "contractScope": null, "id": 27229, "name": "Types", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 31361, "src": "1022:5:96", "typeDescriptions": { "typeIdentifier": "t_contract$_Types_$31361", "typeString": "library Types" } }, "nodeType": "UsingForDirective", "src": "1016:26:96", "typeName": { "contractScope": null, "id": 27230, "name": "Types.Wei", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 31149, "src": "1032:9:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_storage_ptr", "typeString": "struct Types.Wei" } } }, { "constant": true, "id": 27234, "name": "FILE", "nodeType": "VariableDeclaration", "scope": 27434, "src": "1092:42:96", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 27232, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1092:7:96", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": { "argumentTypes": null, "hexValue": "45786368616e6765", "id": 27233, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1124:10:96", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_ddd112a261429abc594f5771eb08d7fa47bff456b2e5f1a47907b78573e33d96", "typeString": "literal_string \"Exchange\"" }, "value": "Exchange" }, "visibility": "private" }, { "body": { "id": 27265, "nodeType": "Block", "src": "1319:262:96", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 27249, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "1355:22:96", "subExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 27246, "name": "deltaWei", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27240, "src": "1356:8:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_memory_ptr", "typeString": "struct Types.Wei memory" } }, "id": 27247, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "isPositive", "nodeType": "MemberAccess", "referencedDeclaration": 31347, "src": "1356:19:96", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Wei_$31149_memory_ptr_$returns$_t_bool_$bound_to$_t_struct$_Wei_$31149_memory_ptr_$", "typeString": "function (struct Types.Wei memory) pure returns (bool)" } }, "id": 27248, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1356:21:96", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "id": 27250, "name": "FILE", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27234, "src": "1391:4:96", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "43616e6e6f74207472616e736665724f757420706f736974697665", "id": 27251, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1409:29:96", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_6313e36f59db0696431488501ed66b6af7c37dd90e338d754fd158b2cb9a686b", "typeString": "literal_string \"Cannot transferOut positive\"" }, "value": "Cannot transferOut positive" }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 27252, "name": "deltaWei", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27240, "src": "1452:8:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_memory_ptr", "typeString": "struct Types.Wei memory" } }, "id": 27253, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "value", "nodeType": "MemberAccess", "referencedDeclaration": 31148, "src": "1452:14:96", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_stringliteral_6313e36f59db0696431488501ed66b6af7c37dd90e338d754fd158b2cb9a686b", "typeString": "literal_string \"Cannot transferOut positive\"" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 27243, "name": "Require", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 28452, "src": "1329:7:96", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Require_$28452_$", "typeString": "type(library Require)" } }, "id": 27245, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "that", "nodeType": "MemberAccess", "referencedDeclaration": 27852, "src": "1329:12:96", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bool_$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$__$", "typeString": "function (bool,bytes32,bytes32,uint256) pure" } }, "id": 27254, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1329:147:96", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 27255, "nodeType": "ExpressionStatement", "src": "1329:147:96" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 27259, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27236, "src": "1515:5:96", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 27260, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27238, "src": "1534:2:96", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 27261, "name": "deltaWei", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27240, "src": "1550:8:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_memory_ptr", "typeString": "struct Types.Wei memory" } }, "id": 27262, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "value", "nodeType": "MemberAccess", "referencedDeclaration": 31148, "src": "1550:14:96", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 27256, "name": "Token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 30850, "src": "1487:5:96", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Token_$30850_$", "typeString": "type(library Token)" } }, "id": 27258, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transfer", "nodeType": "MemberAccess", "referencedDeclaration": 30771, "src": "1487:14:96", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 27263, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1487:87:96", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 27264, "nodeType": "ExpressionStatement", "src": "1487:87:96" } ] }, "documentation": null, "id": 27266, "implemented": true, "kind": "function", "modifiers": [], "name": "transferOut", "nodeType": "FunctionDefinition", "parameters": { "id": 27241, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27236, "name": "token", "nodeType": "VariableDeclaration", "scope": 27266, "src": "1223:13:96", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27235, "name": "address", "nodeType": "ElementaryTypeName", "src": "1223:7:96", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 27238, "name": "to", "nodeType": "VariableDeclaration", "scope": 27266, "src": "1246:10:96", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27237, "name": "address", "nodeType": "ElementaryTypeName", "src": "1246:7:96", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 27240, "name": "deltaWei", "nodeType": "VariableDeclaration", "scope": 27266, "src": "1266:25:96", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_memory_ptr", "typeString": "struct Types.Wei" }, "typeName": { "contractScope": null, "id": 27239, "name": "Types.Wei", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 31149, "src": "1266:9:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_storage_ptr", "typeString": "struct Types.Wei" } }, "value": null, "visibility": "internal" } ], "src": "1213:84:96" }, "returnParameters": { "id": 27242, "nodeType": "ParameterList", "parameters": [], "src": "1319:0:96" }, "scope": 27434, "src": "1193:388:96", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 27300, "nodeType": "Block", "src": "1714:294:96", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 27281, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "1750:22:96", "subExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 27278, "name": "deltaWei", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27272, "src": "1751:8:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_memory_ptr", "typeString": "struct Types.Wei memory" } }, "id": 27279, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "isNegative", "nodeType": "MemberAccess", "referencedDeclaration": 31331, "src": "1751:19:96", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Wei_$31149_memory_ptr_$returns$_t_bool_$bound_to$_t_struct$_Wei_$31149_memory_ptr_$", "typeString": "function (struct Types.Wei memory) pure returns (bool)" } }, "id": 27280, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1751:21:96", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "id": 27282, "name": "FILE", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27234, "src": "1786:4:96", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "43616e6e6f74207472616e73666572496e206e65676174697665", "id": 27283, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1804:28:96", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_7d6fa90b55967e0c28ffe86ae31cec5897a9bfb0739a3d4bece2ebf483e76086", "typeString": "literal_string \"Cannot transferIn negative\"" }, "value": "Cannot transferIn negative" }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 27284, "name": "deltaWei", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27272, "src": "1846:8:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_memory_ptr", "typeString": "struct Types.Wei memory" } }, "id": 27285, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "value", "nodeType": "MemberAccess", "referencedDeclaration": 31148, "src": "1846:14:96", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_stringliteral_7d6fa90b55967e0c28ffe86ae31cec5897a9bfb0739a3d4bece2ebf483e76086", "typeString": "literal_string \"Cannot transferIn negative\"" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 27275, "name": "Require", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 28452, "src": "1724:7:96", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Require_$28452_$", "typeString": "type(library Require)" } }, "id": 27277, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "that", "nodeType": "MemberAccess", "referencedDeclaration": 27852, "src": "1724:12:96", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bool_$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$__$", "typeString": "function (bool,bytes32,bytes32,uint256) pure" } }, "id": 27286, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1724:146:96", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 27287, "nodeType": "ExpressionStatement", "src": "1724:146:96" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 27291, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27268, "src": "1913:5:96", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 27292, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27270, "src": "1932:4:96", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 27294, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 38323, "src": "1958:4:96", "typeDescriptions": { "typeIdentifier": "t_contract$_Exchange_$27434", "typeString": "library Exchange" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_Exchange_$27434", "typeString": "library Exchange" } ], "id": 27293, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1950:7:96", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 27295, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1950:13:96", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 27296, "name": "deltaWei", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 27272, "src": "1977:8:96", "typeDescriptions": { "typeIdentifier": "t_struct$_Wei_$31149_memory_ptr", "typeString": "struct Types.Wei memory" } }, "id": 27297, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "value", "nodeType": "MemberAccess", "referencedDeclaration": 31148, "src": "1977:14:96", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 27288, "name": "Token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 30850, "src": "1881:5:96", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Token_$30850_$", "typeString": "type(library Token)" } }, "id": 27290, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transferFrom", "nodeType": "MemberAccess", "referencedDeclaration": 30809, "src": "1881:18:96", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,address,uint256)" } }, "id": 27298, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1881:120:96", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 27299, "nodeType": "ExpressionStatement", "src": "1881:120:96" } ] }, "documentation": null, "id": 27301, "implemented": true, "kind": "function", "modifiers": [], "name": "transferIn", "nodeType": "FunctionDefinition", "parameters": { "id": 27273, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27268, "name": "token", "nodeType": "VariableDeclaration", "scope": 27301, "src": "1616:13:96", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27267, "name": "address", "nodeType": "ElementaryTypeName", "src": "1616:7:96", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 27270, "name": "from", "nodeType": "Variab